Ossian gutheie and waedell gutheie



(Model.)

'0. & W. GUVTHRIE.

ICE SLIDE.

.Patented sept. 19,1882.

UNN-

UNITED STATES PATENT OFFICE.

OSSIAN GUTHRIE AND WARDELLYGUTHRIE, OF CHICAGO, ILLINOIS.

ice-SLIDE.

SIECIFICATION forming part of Letters Patent No.`264,455, datedSeptember 19, 1882. Application ined April 20,1850. (Model.)

To all whom `it maycoucern:

Be itknown that we, OssIAN GUTHRIE and WARDELL GU'rIIRIE, of the city ofChicago,

county ot' Cook, and State of Illinois, have invvented a new and usefulimprovement in the machinery for regulating and controlling the velocityof running` blocks of ice down inclined slides into ice-houses, which Wehave termed Friction-Slides;7 which improvement is fully set l'orth inthe following specification, reference being had to the accompanyingdrawings.

1t is well known to ice nien generally that in raising ice blocks forstoring in ice-houses they have necessarily to be raised to considerableelevations before breaking off from the elevating-slide to go down theinclined slide into the ice-chambers, that these heights are almostconstantly varying, and Ythat the iceblocks often att-.iin a Velocity onthe downslides that breaks them in pieces and renders them unh't forpacking. What we propose to accomplish by our invention is to regulateand control the velocity of these sliding blocks and prevent their.being broken in their descent.

An essential feature ot' our invention is the ready adaptation tocontrol at will any Aor whatever velocity the blocks may attain. Forthis purpose we provide a friction-brake over which the ice-blocks pass.Thisfriction-brake is attached to suitablelevers, eccentrics, cams, orcranks, by which the friction tothe ice may be increased or diminished,as desirable.'

In order that our invention may be more fully understood, We will referto thedrawings.

Figure l is a top view; Fig. 2, aside view; Fig. 3, a sectional sideview; Fig. 4, an end view.

Letter A shows an ordinary ice-slide. B

shows a false bottom in slide A, studded with friction-points, of ironor other suitable metal, along its length, a a, Ste.

O C show two rock-shafts, one at either end ofthe slide, iliade somewhateccentric by arms or protuberauces c c. These shafts run crosswise ofthe slide, and are provided with cranks or arms D D, connected by thecoupling-bar It).

Y F shows a lever-handle for working the rock-shafts O O. It will beplain that by working the lever-handlel the false bottom may be raisedup, bringing the friction-points a a in Contact with the bottom of the,sliding ice, retarding its velocity at pleasure. By another device-therolling t'rict-ionbrake K, with its friction-teeth c e-the same purposemay be attained.

We claiml l. In ice-slides, a variable brake, so as to changetherelatire position ofthe brake and the slide either by depressing theslide or elevating the brake, in either ease bringing friction-teeth incontact with a descending body of ice, as herein described, and for thepurpose set forth. v

2. The combination and arrangement of the friction-brake B and therock-shafts O O with thecoupliug-bar E, as herein described, and for thepurposes set forth.

3. Ther rolling friction-brake K, studded with friction-points, forrolling into contact with sliding masses ot' ice, as herein desciibed,and for the purposes set forth.

OSSIAN GUTHRIE.

WARDELL GTHRIE.

' Witnesses:

ALFRED GUTHEIE, SANFORD OHAMPLIN.

